>>67850572live chat is considered as subtitles in yt-dlp, for a stream there usually isn't going to be anything else done so you should be able to grab the live chat with just adding --sub-lang all and --write-subs to actually output the subs to a ,json file along with whatever you usually use:
yt-dlp --sub-langs all --write-subs <other options > <link-here>
>>67850907Without being an expert, the first one looks to at least have the subs option wrong, it should be "--sub-langs all" if you want them all. The only other real differences i'm seeing are:
-4 -- Makes you connect via IPv4
--embed-thumbnail - Embed thumbnail in the video as cover art
--progress - Show progress bar
--sleep-subtitles - wait time before getting next subtitle file
--concurrent-fragments allows multiple download threads at once
-o Sets the output file name in that format.
And from the first you have sound and video quality mentioned - but I think by default is should always be trying to get the best quality available.
Without changing anything I'd probably suggest the second one (But there isn't much difference apart from the subtitles and threading count)